git ssb

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var h = require('mutant/h')
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const last = require('lodash/last')
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exports.gives = {
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  app: {html: {threadCard: true}}
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}
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exports.needs = {
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  keys: {sync: {id: 'first'}},
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  history: {sync: {push: 'first'}},
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  about: {
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    obs: {name: 'first'},
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    html: {image: 'first'},
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  },
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  message: {html: {markdown: 'first'}},
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  translations: {sync: {strings: 'first'}},
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}
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function isString (s) {
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  return 'string' === typeof s
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}
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function firstLine (text) {
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  if(text.length < 80 && !~text.indexOf('\n')) return text
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  var line = ''
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  var lineNumber = 0
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  while (line.length === 0) {
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    const rawLine = text.split('\n')[lineNumber]
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    line = trimLeadingMentions(rawLine)
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    lineNumber++
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  }
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  var sample = line.substring(0, 80)
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  if (hasBrokenLink(sample))
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    sample = sample + line.substring(81).match(/[^\)]*\)/)[0]
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  return sample
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  function trimLeadingMentions (str) {
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    return str.replace(/^(\s*\[@[^\)]+\)\s*)*/, '')
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    // deletes any number of pattern " [@...)  " from start of line
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  }
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  function hasBrokenLink (str) {
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    return /\[[^\]]*\]\([^\)]*$/.test(str)
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    // matches "[name](start_of_link"
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  }
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}
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exports.create = function (api) {
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  //render the icon for a thread.
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  //it would be more depjecty to split this
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  //into two methods, one in a private plugin
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  //one in a channel plugin
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  function threadIcon (msg) {
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    if(msg.value.private) {
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      const myId = api.keys.sync.id()
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      return msg.value.content.recps
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        .map(link => isString(link) ? link : link.link)
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        .filter(link => link !== myId)
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        .map(api.about.html.image)
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    }
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    else if(msg.value.content.channel)
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      return '#'+msg.value.content.channel
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  }
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  // REFACTOR: move this to a template?
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  function buildRecipientNames (thread) {
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    const myId = api.keys.sync.id()
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    return thread.value.content.recps
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      .map(link => isString(link) ? link : link.link)
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      .filter(link => link !== myId)
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      .map(api.about.obs.name)
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  }
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  function link(location) {
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    return {'ev-click': () => api.history.sync.push(location)}
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  }
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  function subject (msg) {
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    const { subject, text } = msg.value.content
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    if(!(subject||text)) debugger
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    return api.message.html.markdown(firstLine(subject|| text))
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  }
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  return {app: {html: {threadCard: function (_, thread, opts = {}) {
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    var strings = api.translations.sync.strings()
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    if(!thread.value) return
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    if(!thread.value.content.text) return
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    const subjectEl = h('div.subject', [
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      opts.nameRecipients
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        ?  h('div.recps', buildRecipientNames(thread).map(recp => h('div.recp', recp)))
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        : null,
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      subject(thread)
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    ])
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    const lastReply = thread.replies && last(thread.replies)
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    const replyEl = lastReply
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      ? h('div.reply', [
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          h('div.replySymbol', strings.replySymbol),
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          subject(lastReply)
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        ])
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      : null
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    return h('div.thread', link(thread), [
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      //h('div.context', context),
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      h('div.context', threadIcon(thread)),
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      h('div.content', [
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        subjectEl,
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        replyEl
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      ])
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    ])
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  }}}}
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}
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